1999 GMC Sonoma Owner's Manual - Page 277

yellowblue 8. Replace the headlamp assembly. Install the two retaining clips. Center High-Mounted Stoplamp 4. Turn the harness bulb socket counterclockwise to remove it. Pull the bulb straight out to remove it from the socket. 5. Push the new bulb into the socket until it snaps into place. 6. Put the socket into the lamp assembly and turn it clockwise until it is tight. 7. To replace the assembly, snap the outboard end of the lamp assembly back into the vehicle. Then swing the assembly in and snap it into place. 1. Remove the lens retaining screws. 2. Remove the lens. 6-39